Japanese Government Railways 4-6-4 Locomotives in Japan

Class C61 (Locobase 3836)

Data from Hiroshi Takagi, both from his website ([]) and personal communication August 2000. His indispensable assistance is gratefully acknowledged. See also A Profile of Japanese Steam Locomotives website put up in 2007 by "Toki S." at [], last accessed 27 September 2015.

These "Hudsons" were converted from earlier D51 Mikados to make up for a deficit in passenger motive power after the end of World War II. Toki S says that 80% of the "reconstruction" was new with only the D51 boiler and other parts being preserved. Piston valve diameter remained 250 mm. The original plan to build 40 C61s and 40 C62s (Locobase 2602) changed and C61 conversions ended at the 33rd engine.

Information from Ejii Nozawa's web site ([]) notes that these were rebuilt from 1947-1949 by Hitachi and Mitsubishi.

Because the measurements above represent the fire side of tubes and flues, a direct comparison with tube & flue heating surface areas of North American and British locomotives requires adding approximately 6-10% to the figures shown.